My Inquiry
My Account
NXP Semiconductors MC9S08SU8VFK
- Part No.:
- MC9S08SU8VFK
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
MC9S08SU8VFK.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,821
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC9S08SU8VFK from NXP is an ultra-high-voltage 8-bit MCU based on the HCS08 core, designed for 3-phase BLDC motor control in 4.5–18 V systems. It integrates a 6-channel MCPWM, dual 5-channel 12-bit ADCs, two current-sensing op-amps, over-current/over-voltage protection, and 3-phase gate drivers for high-side PMOS and low-side NMOS. Used in cordless power tools and drone ESCs.
For engineers reviewing the MC9S08SU8VFK datasheet, MC9S08SU8VFK pinout, MC9S08SU8VFK application, or MC9S08SU8VFK equivalent, key selection factors include its 8 KB Flash, 24-pin QFN (4×4 mm), -40°C to +105°C operation, integrated 3-phase pre-driver, and sensorless BLDC control capability with three HV phase comparators.
Technical Context
The MC9S08SU8VFK implements a dedicated motor control architecture with a 40 MHz HCS08 CPU, FLL-based clock generation, and hardware-accelerated 6-channel MCPWM with automatic dead-time insertion. Its System Integration Module (SIM) enables inter-module communication and interrupt prioritization.
It embeds two independent 5-channel 12-bit ADCs (ADCA/ADCB), one analog comparator with internal DAC, and two pulse width timers (PWT) for precise timing of rotor position signals-enabling robust sensorless commutation without external Hall sensors or encoders.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | HCS08 CPU running up to 40 MHz - delivers deterministic real-time motor control with low latency. |
| Flash Memory | 8 KB - sufficient for compact BLDC firmware with sensorless FOC or trapezoidal commutation. |
| RAM | 768 B - supports runtime variables, PWM buffer tables, and ADC sample storage. |
| Operating Voltage | 4.5 V to 18 V - directly interfaces battery packs in cordless tools and drones without external LDO. |
| Temperature Range | -40°C to +105°C - qualified for industrial and portable power tool environments. |
| Package | 24-pin QFN, 4×4×0.65 mm, 0.5 mm pitch - enables compact, thermally efficient PCB layout. |
| PWM Channels | 6-channel MCPWM with hardware dead-time - eliminates software timing errors in 3-phase bridge drive. |
Pinout & Package
MC9S08SU8VFK is housed in a 24-pin QFN package (4×4 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per NXP reference schematic and MC9S08SUXFAMFS REV 1cc documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Supports direct connection to 4.5–18 V battery rail; VSS provides low-impedance return path for gate drivers and analog circuits. |
| HSx, LSx (x=0,1,2) | High-side PMOS / low-side NMOS gate driver outputs | Drive external P+N MOSFET half-bridges; each pair controls one motor phase with matched timing. |
| ADC0–ADC4, ADCB0–ADCB4 | Analog inputs | Sample motor phase currents, bus voltage, temperature, and auxiliary sensors with 12-bit resolution and <1.5 µs conversion time. |
| ACMP0+, ACMP0- | Analog comparator inputs | Enable zero-crossing detection for sensorless commutation using back-EMF monitoring. |
| FTM0_CH0–CH1 | FlexTimer input capture | Capture timing edges from comparator outputs or external encoder signals for closed-loop speed control. |
| SCI_TX, SCI_RX | UART interface | Provide host communication for configuration, telemetry, and firmware updates via TTL-level serial link. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3-phase gate driver | Drives six external MOSFETs (3 HS PMOS + 3 LS NMOS) with matched propagation delay and shoot-through prevention logic. |
| Dual 5-channel 12-bit ADCs | Simultaneous sampling of motor currents and DC bus voltage enables accurate field-oriented control without external ADCs. |
| Three HV phase comparators | Directly monitor back-EMF zero crossings across all three phases for reliable sensorless BLDC commutation at standstill and low speed. |
| On-chip OCP and OVP | Hardware-triggered shutdown within <1 µs upon overcurrent or overvoltage event - protects MOSFETs and battery without software latency. |
| 6-channel MCPWM with dead-time | Generates complementary PWM pairs with programmable dead-time insertion to prevent shoot-through in external half-bridges. |
Applications
| Cordless Power Tools | Drone ESC |
|---|---|
Use Scenario: Compact, battery-powered drills, saws, and drivers requiring high torque at variable speeds and stall conditions. IC Role / Device Role / Timing Role: Primary motor controller executing sensorless BLDC commutation, current regulation, and thermal management. Use Value: Reduces BOM count by integrating gate drivers, ADCs, comparators, and protection - enabling sub-25 mm² motor control PCB area. | Use Scenario: Brushless motor control in multirotor UAVs where weight, size, and dynamic response are critical. IC Role / Device Role / Timing Role: Real-time commutation engine with microsecond-level timing precision for 20–50 kHz PWM switching and fast throttle response. Use Value: Eliminates need for discrete op-amps and comparators while supporting bidirectional current sensing for regenerative braking simulation. |
| BLDC Step Motor Control | Healthcare Mobility Devices |
Use Scenario: Precision motion control in automated dispensers, lab fluid handlers, and small actuation modules. IC Role / Device Role / Timing Role: Closed-loop stepper-like control using BLDC motor with microstepping via sinusoidal PWM modulation. Use Value: Achieves smooth low-speed operation and high positional repeatability using dual ADCs for current vector resolution. | Use Scenario: Portable medical pumps, ventilator blowers, and mobility assist devices operating under strict safety and reliability requirements. IC Role / Device Role / Timing Role: Safety-aware motor controller with windowed COP watchdog, CRC memory checking, and hardware OCP/OVP. Use Value: Meets IEC 60601-1 functional safety prerequisites through integrated fault detection and autonomous shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar motor control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08SU16VFK | 16 KB Flash vs. 8 KB; otherwise identical peripheral set, package, and voltage rating. | Supports larger firmware with advanced commutation algorithms or bootloader + application partitioning. | Select when firmware exceeds 8 KB or future-proofing for feature expansion is required. |
| MC9S08SH8CTJ | 8 KB Flash, but lacks integrated gate drivers, HV comparators, and OCP/OVP circuitry; requires external driver ICs and protection components. | Suitable for lower-voltage (<12 V), lower-power applications where discrete driver cost and board space are acceptable. | Choose only if system voltage stays ≤12 V and design can accommodate added complexity and component count. |
Compared with MC9S08SU16VFK, the MC9S08SU8VFK offers identical motor control peripherals in a cost-optimized 8 KB Flash variant; compared with MC9S08SH8CTJ, it delivers full single-chip BLDC integration - eliminating external drivers, op-amps, and protection ICs to reduce PCB area by up to 50%.
Availability
MC9S08SU8VFK is available at Aetrix Electronics and suitable for cordless power tools, drone ESCs, BLDC step motor controllers, and healthcare mobility devices requiring stable component supply across extended product lifecycles.
Supply support for MC9S08SU8VFK includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The MC9S08SUx family was developed specifically for cost-sensitive, space-constrained 3-phase BLDC motor control in portable and battery-powered equipment - emphasizing integration, high-voltage operation, and sensorless commutation capability.
FAQ
What is the maximum operating voltage for the MC9S08SU8VFK?
The MC9S08SU8VFK supports a supply voltage range of 4.5 V to 18 V across its full operating temperature range (-40°C to +105°C). This allows direct interfacing with common Li-ion and Li-polymer battery packs used in cordless tools and drones without external voltage regulation. The MC9S08SU8VFK's ultra-high-voltage design eliminates the need for intermediate LDOs or PMUs in many applications.
Does the MC9S08SU8VFK support sensorless BLDC commutation?
Yes, the MC9S08SU8VFK includes three integrated high-voltage phase comparators that monitor motor back-EMF for zero-crossing detection. Combined with its dual 12-bit ADCs and 6-channel MCPWM, it enables robust sensorless trapezoidal or FOC-based commutation - even at standstill - without external comparators or Hall-effect sensors. This capability is fully implemented in the MC9S08SU8VFK silicon.
What package type and dimensions does the MC9S08SU8VFK use?
The MC9S08SU8VFK is packaged in a 24-pin QFN with 4 mm × 4 mm footprint, 0.65 mm height, and 0.5 mm pin pitch. It features an exposed thermal pad for enhanced heat dissipation in motor control applications. This compact package matches the MC9S08SU16VFK and is specified in NXP document MC9S08SUXFAMFS REV 1cc for the SUx family.
How much Flash and RAM does the MC9S08SU8VFK include?
The MC9S08SU8VFK contains 8 KB of on-chip flash memory and 768 bytes of data RAM. The flash supports in-application programming (IAP) for field firmware updates, while the RAM accommodates control loop variables, ADC buffers, and PWM lookup tables. This memory allocation is validated in the MC9S08SU8VFK datasheet and matches the SU8 variant designation.
What communication interfaces are available on the MC9S08SU8VFK?
The MC9S08SU8VFK integrates one SCI (UART) module and one I²C/SMBus interface. These enable host microcontroller communication, parameter configuration, and telemetry reporting. The SCI supports standard asynchronous serial protocols at configurable baud rates, while the I²C interface allows connection to temperature sensors, EEPROMs, or other slave peripherals - both interfaces are present in the MC9S08SU8VFK silicon as documented in the family reference manual.
MC9S08SU8VFK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 24-UFQFN Exposed Pad
- Series:
- S08
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 40MHz
- Connectivity:
- I2C, SCI
- Peripherals:
- PWM, WDT
- Number of I/O:
- 17
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 18V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08SU8VFK FAQ
1.How can I place an order for MC9S08SU8VFK through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08SU8VFK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC9S08SU8VFK reliable?
The price and inventory of MC9S08SU8VFK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08SU8VFK is usually 5 days.
3.What payment methods are accepted for MC9S08SU8VFK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08SU8VFK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08SU8VFK?
MC9S08SU8VFK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08SU8VFK order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC9S08SU8VFK?
For technical support, including MC9S08SU8VFK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08SU8VFK requirements.
6.How does Aetrix verify that MC9S08SU8VFK is sourced from the original manufacturer or authorized distributors?
All MC9S08SU8VFK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC9S08SU8VFK meets industry standards.
7.What is the process for return or replacement of MC9S08SU8VFK?
All MC9S08SU8VFK units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08SU8VFK, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC9S08SU8VFK part is unused and in its original packaging.
Return procedure for MC9S08SU8VFK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC9S08SU8VFK Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
